Spring begins in the southern hemisphere of the Earth in September. This is because the seasonal change follows the equinox, which occurs around September 22 or 23. During spring, temperatures start to warm up, and the days begin to get longer.
In the Northern Hemisphere the vernal equinox falls about March 20 or 21, as the Sun crosses the celestial equator going north. In the Southern Hemisphere the equinox occurs on September 22 or 23, when the Sun moves south across the celestial equator.
In the southern hemisphere of the Earth, spring typically begins around September 22nd and ends around December 21st. This is also known as the vernal equinox, when the days and nights are of equal length.
